EXHIBIT 32.1

CERTIFICATION OF

CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

Pursuant to 18 U.S.C. Sec. 1350 and in connection with the accompanying report on Form 10-Q for the period ended September 30, 2008 that contains financial statements of Perficient, Inc. (the “Company”) filed for such period and that is being filed concurrently with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company hereby certify that:

1.	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
2.	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 6, 2008	By:	/s/ John T. McDonald
		John T. McDonald
		Chief Executive Officer(Principal Executive Officer)

Date: November 6, 2008	By:	/s/ Paul E. Martin
		Paul E. Martin
		Chief Financial Officer(Principal Financial Officer)